The cosmological impact of Brane-Chern-Simons massive gravity


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Kazempour S., Akbarieh A.

JOURNAL OF HIGH ENERGY PHYSICS, cilt.2024, sa.11, 2024 (SCI-Expanded, Scopus)

Özet

In this paper, we present a novel extension of massive gravity theory; the Brane-Chern-Simons massive gravity theory. We explore the cosmological implications of this theory by deriving the background equations and demonstrating the existence of self-accelerating solutions. Interestingly, our theory suggests the existence of self-accelerating mechanisms that originate from an effective cosmological constant, leading to intriguing possibilities for understanding the nature of cosmic acceleration. Furthermore, we perform a tensor perturbation analysis to investigate the propagation of gravitational waves in this framework. We derive the dispersion relation for gravitational waves and study their behavior in the Friedmann-Lema & icirc;tre-Robertson-Walker cosmology within the context of Brane-Chern-Simons massive gravity.